I have a check engine light, and the obd-ii port doesn't work, with 3 obd-ii readers. Is the port bad? Or is it like a special Jaguar only obd-ii? it fits but doesn't work... and the obd-ii plug is above near the gas pedal right? is that the only one??

 

Check the fuse?

 

which one is it?

 

Check your owners manual for the fuse locations?

 

Correct on the location.

There were quite some readers in the past not working, but I think most of that has settled.
Not sure if you use Bluetooth or a fixed one, but if you use a bluetooth version, you should see the Bluetooth unit trying to connect to your phone.
There is also a LED on the Bluetooth unit, confirming power on the plug.

Although nothing is impossible, I can hardly see how the plug should stop working, and I don't think there is a separate fuse for it, but that is easy to check.

EDIT: I read in an other thread that an I-phone and Android phones need different Bluetooth devices.
Again, not sure what you are using ...

 

If he's not using a bluetooth one, but regular readers, then I'd certainly look elsewhere for either a fuse (I'm not sure which one, sorry), or then possibly a malfunction somewhere. I've had it happen on another car before, but junked it before I sorted it out.

 

So last night i looked at the Vehicle Care handbook, the fuse is in right hand passenger heel board. Fuse no.10 - JAGUAR DIAGNOSTIC SYSTEM.

 

And fuse number 4 in left hand side heelboard.